EP1139892B1 - Axial intramedullary screw for the osteosynthesis of long bones - Google Patents

Axial intramedullary screw for the osteosynthesis of long bones Download PDF

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Publication number
EP1139892B1
EP1139892B1 EP99969238A EP99969238A EP1139892B1 EP 1139892 B1 EP1139892 B1 EP 1139892B1 EP 99969238 A EP99969238 A EP 99969238A EP 99969238 A EP99969238 A EP 99969238A EP 1139892 B1 EP1139892 B1 EP 1139892B1
Authority
EP
European Patent Office
Prior art keywords
screw
transverse
axial
conical
axial intramedullary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99969238A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1139892A1 (en
Inventor
Nenad Sesic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sesic Nenard
Original Assignee
Sesic Nenard
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from HR980637A external-priority patent/HRP980637A2/hr
Application filed by Sesic Nenard filed Critical Sesic Nenard
Priority claimed from HR990405A external-priority patent/HRP990405A2/hr
Publication of EP1139892A1 publication Critical patent/EP1139892A1/en
Application granted granted Critical
Publication of EP1139892B1 publication Critical patent/EP1139892B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7216—Intramedullary devices, e.g. pins or nails for bone lengthening or compression
    • A61B17/7225—Intramedullary devices, e.g. pins or nails for bone lengthening or compression for bone compression
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
    • A61B17/725—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with locking pins or screws of special form
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7291—Intramedullary devices, e.g. pins or nails for small bones, e.g. in the foot, ankle, hand or wrist

Definitions

  • This invention is related to the wide area (Int. Cl. A61B) of orthopaedic surgery and traumatology for the operative treatment of fractures of long bones in humans and animals.
  • Many different implants are used internationally and in different parts of the world. Among them are different bone screws (cortical, cancellous, malleolar, DHS, DCS etc.), bone plates (straight, angular etc), different types of external fixators and different intramedullary implants (Kuntcher nail, Rush nail, Ender nail, Kirschner wires implanted intramedullary, "gama nail” and for the last fifteen years the interlocking nail).
  • the axial intramedullary screw (AIMS) system described here includes most of the operative indications for all formerly mentioned bone implants (fasteners), and may be used instead of them.
  • AIMS bone implant from the technical point of view is the same as for other osteosynthetic devices. It is to maintain relative stability between the fractured bone parts with the purpose of creating optimal conditions for bone healing. During the procedure of application of any osteosynthetic device some basic mechanical principles are used to promote optimal osteosynthesis :
  • the AIMS system may be applied by the use of all the aforementioned mechanical principles depending on the type of fracture or local biomechanical needs.
  • AIMS In distinction to all other intramedullary implants (Kuntscher and interlocking nail) - AIMS does not create axial and bending stability using the mechanical principles formerly described (gliding and locking).
  • the characteristic of the AIMS is that axial and bending stability is attained through neutralisation (unloading) by wide contact between threads of the AIMS cutting into the internal cortex of all fragments of the fractured bone.
  • axial and bending stability is attained through neutralisation (unloading) by wide contact between threads of the AIMS cutting into the internal cortex of all fragments of the fractured bone.
  • interlocking screws Fig. 4 - Fig. 11
  • AIMS As distinguished from other intramedullary implants AIMS is very rigid.
  • the principles of the application of AIMS are very similar to other intramedullary implants, but it is also distinguished from them in some important features:
  • Modular AIMS (twofold and threefold) is specially applicable for treatment of fractures on small metacarpal and metatarsal bones or in some cases of fractures in growing bones in children (for prevention of injury of the growth plate).
  • this modular AIMS it is possible to screw in both directions. It is characterised by an axial conical connection between them (Fig. 12 - 14) and compression of the bone segments is induced over an axially-positioned additional transverse conical connection - interlocking screw (Fig. 12 - 15) through the hole of the axial conus (Fig. 12 - 16).
  • the additional conical interlocking screw functions in derotation stability (Fig. 12-17).

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
EP99969238A 1998-12-23 1999-12-22 Axial intramedullary screw for the osteosynthesis of long bones Expired - Lifetime EP1139892B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
HR980637A HRP980637A2 (en) 1998-12-23 1998-12-23 Intramedullary screw for the osteosynthesis of long bones
HR980637 1998-12-23
PCT/HR1999/000033 WO2000038586A1 (en) 1998-12-23 1999-12-22 Axial intramedullary screw for the osteosynthesis of long bones
HR990405 1999-12-22
HR990405A HRP990405A2 (en) 1999-12-22 1999-12-22 System of intramedullary screw for the osteosynthesis of long bones

Publications (2)

Publication Number Publication Date
EP1139892A1 EP1139892A1 (en) 2001-10-10
EP1139892B1 true EP1139892B1 (en) 2006-12-20

Family

ID=26317114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969238A Expired - Lifetime EP1139892B1 (en) 1998-12-23 1999-12-22 Axial intramedullary screw for the osteosynthesis of long bones

Country Status (7)

Country Link
US (1) US6517541B1 (enExample)
EP (1) EP1139892B1 (enExample)
JP (2) JP4167398B2 (enExample)
AT (1) ATE348573T1 (enExample)
AU (1) AU2819100A (enExample)
DE (1) DE69934516T2 (enExample)
WO (1) WO2000038586A1 (enExample)

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DE69934516D1 (de) 2007-02-01
JP2002533154A (ja) 2002-10-08
JP4167398B2 (ja) 2008-10-15
EP1139892A1 (en) 2001-10-10
JP2008212709A (ja) 2008-09-18
WO2000038586A1 (en) 2000-07-06
ATE348573T1 (de) 2007-01-15
AU2819100A (en) 2000-07-31
US6517541B1 (en) 2003-02-11

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